Abstract:
The present invention relates to a mobile service and, more specifically, a method for enhancing mobile service quality when a broadcast failure or delay occurs in a wireless mobile terminal broadcast telecommunication system. A method for receiving a broadcast service according to the present invention comprises the following steps of: requesting a content server to transmit preliminary broadcast data or user customized data over a telecommunication network; receiving the requested data from the content server over a broadcast network or telecommunication network; and playing the received data when the playback of general broadcast data is delayed. According to the present invention, a broadcast video can continuously play although a broadcast failure occurs by playing a previously received video. Also, a channel delay time which a user feels can be reduced by providing user customized data. [Reference numerals] (AA) Start; (BB) End; (S100) Request preliminary broadcast data or user customized data (mobile communication network); (S120) Receive the request data (broadcast network or mobile communication network); (S140) Replay the received data when the playback of general broadcast data is delayed
Abstract:
PURPOSE: A transmission system for providing a hybrid service, a receiving device thereof and a service providing method thereof are provided to selectively provide the hybrid service using an information describer. CONSTITUTION: A first signal processing unit (230) processes reference data detected from a demultiplexer unit. If a service is determined as a hybrid service by an information describer, a control unit (240) controls a second receiving unit to access a source device corresponding to supplementary data reference information. A second signal processing unit (260) receives a second signal including additional data from the source device through an IP communications network. The second signal processing unit processes the additional data. An output unit (270) synchronizes the reference data processed in the first signal processing unit and the additional data processed in the second signal processing unit and outputs synchronized data of the reference data and the additional data. [Reference numerals] (210) First reception unit; (220) Demux unit; (230) First signal processing unit; (231) Video processing unit; (232) Audio processing unit; (240) Control unit; (250) Second reception unit; (260) Second signal processing unit; (270) Output unit
Abstract:
PURPOSE: A device for transmitting and receiving a non real time stereoscopic broadcasting service and a method thereof are provided to deliver a reference picture and an additional picture based on non real time, thereby providing a 3D broadcasting service. CONSTITUTION: A NRT contents encoder(211) encodes stereoscopic picture contents including a reference picture and an additional picture. A NRT is a non real time stream. The NRT contents encoder generates a non real time stream. A NRT signaling information encoder(213) generates NRT signaling information including at least one of a service map table and a non real time information table. A multiplexer(220) performs a multiplexing operation with the non real time stream and the NRT signaling information. [Reference numerals] (201) Transmitting server; (203) Real time broadcast A/V encoder; (205) PSI/PSIP generator; (211) NRT contents encoder; (213) NRT signaling information encoder; (220) Multiplexing unit; (AA) Real time 2D image; (BB) Real time stream; (CC) NRT table; (DD) NRT stream; (EE) 3D NRT broadcasting unit; (FF) 3D NRT contents; (GG) 3D NRT file; (HH) Standard image; (II) Additional image; (JJ) MPEG-2TS
Abstract:
PURPOSE: A non-real time performing method and an apparatus thereof are provided to request an error part of digital broadcasting content. CONSTITUTION: A file verifying unit determines whether an error part of non-real time service content is retransmitted. A re-transmitting request signal generating unit generates a re-transmitting request signal. The re-transmitting request signal is a signal for requesting retransmission of the error part. A return channel transmitting unit transmits the re-transmission request signal through a return channel network.